Mirtone Mirtione 7200

Posted by Pete Thomas on Thursday, October 21 2010

Have a Mirtone 7200 fire alarm system serviced by eight pull boxes and firing 12 horns.
When we have a severe lightning storm and get a "close" hit the unit will "fire off". No pull stations have been activated. The panel light will show "Ground Fault'"
LOOKING FOR A REMEDY.